387161649 has 24 divisors (see below), whose sum is σ = 639954432. Its totient is φ = 220947840.

The previous prime is 387161641. The next prime is 387161681. The reversal of 387161649 is 946161783.

It is a happy number.

It is not a de Polignac number, because 387161649 - 2³ = 387161641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387161641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50809 + ... + 57929.

It is an arithmetic number, because the mean of its divisors is an integer number (26664768).

Almost surely, 2^387161649 is an apocalyptic number.

It is an amenable number.

387161649 is a deficient number, since it is larger than the sum of its proper divisors (252792783).

387161649 is a wasteful number, since it uses less digits than its factorization.

387161649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7997 (or 7994 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 387161649 is about 19676.4236841963. The cubic root of 387161649 is about 728.8376127886.

The spelling of 387161649 in words is "three hundred eighty-seven million, one hundred sixty-one thousand, six hundred forty-nine".